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Liu X, Zhan XQ, Wang MJ, Cui WB, Chen XH, Qi FM, Yu JN, Dai JY, Fei DQ, Zhang ZX. Bioactive diterpenoids and sesquiterpenoids with different skeletons from Salvia digitaloides Diels. PHYTOCHEMISTRY 2023; 205:113501. [PMID: 36343681 DOI: 10.1016/j.phytochem.2022.113501] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2022] [Revised: 10/14/2022] [Accepted: 11/01/2022] [Indexed: 06/16/2023]
Abstract
Salvia has been regarded as a beneficial healing herb in ancient Egypt, Rome and Greece, and is listed as an official medicine in the pharmacopoeias of many countries worldwide. Currently, Salvia is widely used to flavor and preserve food. Here, two undescribed norabietane-type diterpenoids, sadigitaloides A and B, two undescribed germacrane-type sesquiterpenoids, sadigitaloides C and D, five undescribed guaiane-type sesquiterpenoid lactones, sadigitaloides E-I, two undescribed noreudesmane-type sesquiterpenoids, sadigitaloides J and K, one known diterpenoid, three known sesquiterpenoids, and three other types of known compounds were isolated from the 95% ethanol extract of the whole plants of Salvia digitaloides. Their structures and absolute configurations were characterized using 1D and 2D NMR spectroscopic techniques, electronic circular dichroism (ECD) calculations, HRESIMS experiments, and single-crystal X-ray diffraction analysis. Some compounds were evaluated for their anti-inflammatory activities against lipopolysaccharide (LPS)-induced TNF-α production in rat macrophage NR8383 cells. Sadigitaloide A showed noticeable anti-inflammatory activity at a concentration of 100.0 μM. At a concentration of 60 μM, sadigitaloide B exhibited better protection of dopaminergic neurons than the positive control n-butylidenephthalide in the Caenorhabditis elegans model injured by 6-OHDA. The phytotoxic activities of some compounds were attributed to considerable inhibitory effects on the growth of the roots and hypocotyls of Raphanus sativus L seedlings, especially cis, trans-abscisic acid, whose inhibition rates were much higher than those of glyphosate at concentrations ranging from 50 to 400 ppm. These results indicated that abietane-type diterpenoids possessed excellent anti-inflammatory and neuroprotective activities and further suggested that the low-molecular-weight compounds exhibited outstanding phytotoxic activities.
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Affiliation(s)
- Xu Liu
- School of Pharmacy, State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou, 730000, PR China
| | - Xiao-Qing Zhan
- School of Pharmacy, State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou, 730000, PR China
| | - Mei-Jie Wang
- School of Pharmacy, State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou, 730000, PR China
| | - Wen-Bo Cui
- School of Pharmacy, State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou, 730000, PR China
| | - Xiao-Han Chen
- School of Pharmacy, State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou, 730000, PR China
| | - Feng-Ming Qi
- School of Pharmacy, State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou, 730000, PR China
| | - Jian-Ning Yu
- School of Pharmacy, State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou, 730000, PR China
| | - Jian-Ye Dai
- School of Pharmacy, State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou, 730000, PR China
| | - Dong-Qing Fei
- School of Pharmacy, State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou, 730000, PR China; State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Guangxi Normal University, Guilin, 541004, PR China.
| | - Zhan-Xin Zhang
- School of Pharmacy, State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou, 730000, PR China.
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Papaemmanouil CD, Peña-García J, Banegas-Luna AJ, Kostagianni AD, Gerothanassis IP, Pérez-Sánchez H, Tzakos AG. ANTIAGE-DB: A Database and Server for the Prediction of Anti-Aging Compounds Targeting Elastase, Hyaluronidase, and Tyrosinase. Antioxidants (Basel) 2022; 11:antiox11112268. [PMID: 36421454 PMCID: PMC9686885 DOI: 10.3390/antiox11112268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 11/03/2022] [Accepted: 11/09/2022] [Indexed: 11/18/2022] Open
Abstract
Natural products bear a multivariate biochemical profile with antioxidant, anti-inflammatory, antibacterial, and antitumoral properties. Along with their natural sources, they have been widely used both as anti-aging and anti-melanogenic agents due to their effective contribution in the elimination of reactive oxygen species (ROS) caused by oxidative stress. Their anti-aging activity is mainly related to their capacity of inhibiting enzymes like Human Neutrophil Elastase (HNE), Hyaluronidase (Hyal) and Tyrosinase (Tyr). Herein, we accumulated literature information (covering the period 1965–2020) on the inhibitory activity of natural products and their natural sources towards these enzymes. To navigate this information, we developed a database and server termed ANTIAGE-DB that allows the prediction of the anti-aging potential of target compounds. The server operates in two axes. First a comparison of compounds by shape similarity can be performed against our curated database of natural products whose inhibitory potential has been established in the literature. In addition, inverse virtual screening can be performed for a chosen molecule against the three targeted enzymes. The server is open access, and a detailed report with the prediction results is emailed to the user. ANTIAGE-DB could enable researchers to explore the chemical space of natural based products, but is not limited to, as anti-aging compounds and can predict their anti-aging potential. ANTIAGE-DB is accessed online.
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Affiliation(s)
- Christina D. Papaemmanouil
- Department of Chemistry, Section of Organic Chemistry and Biochemistry, University of Ioannina, 45110 Ioannina, Greece
| | - Jorge Peña-García
- Structural Bioinformatics and High Performance Computing Research Group (BIO-HPC), Computer Engineering Department, Universidad Católica de Murcia (UCAM), 30107 Guadalupe, Spain
| | - Antonio Jesús Banegas-Luna
- Structural Bioinformatics and High Performance Computing Research Group (BIO-HPC), Computer Engineering Department, Universidad Católica de Murcia (UCAM), 30107 Guadalupe, Spain
| | - Androniki D. Kostagianni
- Department of Chemistry, Section of Organic Chemistry and Biochemistry, University of Ioannina, 45110 Ioannina, Greece
| | - Ioannis P. Gerothanassis
- Department of Chemistry, Section of Organic Chemistry and Biochemistry, University of Ioannina, 45110 Ioannina, Greece
| | - Horacio Pérez-Sánchez
- Structural Bioinformatics and High Performance Computing Research Group (BIO-HPC), Computer Engineering Department, Universidad Católica de Murcia (UCAM), 30107 Guadalupe, Spain
- Correspondence: (H.P.-S.); (A.G.T.)
| | - Andreas G. Tzakos
- Department of Chemistry, Section of Organic Chemistry and Biochemistry, University of Ioannina, 45110 Ioannina, Greece
- Institute of Materials Science and Computing, University Research Center of Ioannina (URCI), 45110 Ioannina, Greece
- Correspondence: (H.P.-S.); (A.G.T.)
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Boroujeni SY, Haghighijoo Z, Mohammadi-Khanaposhtani M, Mosadeghkhah A, Moaazam A, Yavari A, Hajimahmoodi M, Sabourian R, Hosseini S, Larijani B, Hamedifar H, Ansari S, Mahdavi M. Design, Synthesis, In Vitro, and In silico Evaluation of N-phenylacetamide-oxindole-thiosemicarbazide hybrids as New Potential Tyrosinase Inhibitors. Chem Biodivers 2022; 19:e202100666. [PMID: 35156774 DOI: 10.1002/cbdv.202100666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Accepted: 02/14/2022] [Indexed: 11/11/2022]
Abstract
A novel series of N-phenylacetamide-oxindole-thiosemicarbazide hybrids were synthesized and evaluated for their tyrosinase inhibitory activity. According to tyrosinase inhibition results, all the synthesized compounds showed high tyrosinase inhibitory activity with IC50 values ranging from 0.8 to 3.88 µM in comparison to positive control kojic acid with IC50 value of 36.32 µM. Among tested compounds, analog 7o, containing the 2-methyl-4-nitrophenyl on N-phenylacetamide moiety displayed superior tyrosinase inhibition. This compound was around 45-fold more potent than kojic acid. The kinetic analysis of compound 7o demonstrated that this compound is a competitive inhibitor against tyrosinase. Docking study of this compound demonstrated that compound 7o interacted with critical histidine residues within tyrosinase active site.
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Affiliation(s)
- Shahriar Yari Boroujeni
- TUMS: Tehran University of Medical Sciences, medicinal chemistry, 16 azar, tehran, IRAN (ISLAMIC REPUBLIC OF)
| | - Zahra Haghighijoo
- Louisiana State University, chemistry, Lafayette, Lafayette, UNITED STATES
| | | | - Ali Mosadeghkhah
- TUMS: Tehran University of Medical Sciences, chemistry, 16 azar, tehran, IRAN (ISLAMIC REPUBLIC OF)
| | - Ali Moaazam
- TUMS: Tehran University of Medical Sciences, chemistry, 16 azar, tehran, IRAN (ISLAMIC REPUBLIC OF)
| | - Ali Yavari
- TUMS: Tehran University of Medical Sciences, chemistry, 16 azar, tehran, IRAN (ISLAMIC REPUBLIC OF)
| | - Manan Hajimahmoodi
- TUMS: Tehran University of Medical Sciences, chemistry, 16 azar, tehran, IRAN (ISLAMIC REPUBLIC OF)
| | - Reihaneh Sabourian
- TUMS: Tehran University of Medical Sciences, chemistry, 16 azar, tehran, IRAN (ISLAMIC REPUBLIC OF)
| | - Samesadat Hosseini
- TUMS: Tehran University of Medical Sciences, chemistry, 16 azar, tehran, IRAN (ISLAMIC REPUBLIC OF)
| | - Bagher Larijani
- TUMS: Tehran University of Medical Sciences, pathology, 16 azar, tehran, IRAN (ISLAMIC REPUBLIC OF)
| | - Halleh Hamedifar
- TUMS: Tehran University of Medical Sciences, Medical Genetics, 16 azar, tehran, IRAN (ISLAMIC REPUBLIC OF)
| | - Samira Ansari
- TUMS: Tehran University of Medical Sciences, chemistry, 16 azar, tehran, IRAN (ISLAMIC REPUBLIC OF)
| | - Mohammad Mahdavi
- Tehran University of Medicinal Sciences, Endocrinology and Metabolism Research Center, 16 Azar ST. Enghelab Sq., 14176, Tehran, IRAN (ISLAMIC REPUBLIC OF)
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Deveci E, Tel-Çayan G, Duru ME, Öztürk M. Isolation, characterization, and bioactivities of compounds from Fuscoporia torulosa mushroom. J Food Biochem 2019; 43:e13074. [PMID: 31599026 DOI: 10.1111/jfbc.13074] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Revised: 09/05/2019] [Accepted: 09/15/2019] [Indexed: 12/14/2022]
Abstract
Chromatographic purification of Fuscoporia torulosa extracts resulted in the isolation and characterization of a new steroid, 5α,8α-epidioxyergosta-6,22-dien-3β-il-palmitate (1) and 10 known compounds (2-11). The structures of compounds were elucidated by IR, NMR, MS analyses, and comparison with literature data. Cytotoxic activities against MCF-7 (breast cancer), PC-3 (prostate cancer), and 3T3 (nontumor) of the extracts and cytotoxic, antioxidant, cholinesterase, and tyrosinase inhibitory activities of all isolated compounds were evaluated. The methanol extract and Compound 8 showed the best cytotoxicity against MCF-7, whereas the hexane extract and Compound 4 displayed the highest cytotoxicity against PC-3. Compounds 10 and 11 displayed higher antioxidant activity than α-tocopherol and butylated hydroxyanisole (BHA) which are used as standards in ABTS•+ , DPPH• , and cupric reducing antioxidant capacity (CUPRAC) assays. Also, cholinesterase inhibitory activity against acetylcholinesterase (AChE) and butrylcholinesterase (BChE), Compounds 4 and 8 were determined as the most active compounds. Among all isolated compounds, Compound 11 exhibited the highest tyrosinase inhibitory activity. PRACTICAL APPLICATIONS: Mushrooms have various important medicinal properties. A detailed study was made to identify the bioactive constituents of Fuscoporia torulosa mushroom and a new (1) and 10 known compounds (2-11) were isolated. Compounds 10 and 11 showed higher antioxidant activity than standards. The methanol extract and Compound 8 exhibited high cytotoxic activity against MCF-7. Compound 8 indicated potent BChE inhibitory activity. This study suggests that natural compounds isolated from F. torulosa mushroom could be used as promising anticancer, antioxidant, and anticholinesterase agents.
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Affiliation(s)
- Ebru Deveci
- Faculty of Sciences, Department of Chemistry, Muğla Sıtkı Koçman University, Muğla, Turkey
| | - Gülsen Tel-Çayan
- Department of Chemistry and Chemical Processing Technologies, Muğla Vocational School, Muğla Sıtkı Koçman University, Muğla, Turkey
| | - Mehmet Emin Duru
- Faculty of Sciences, Department of Chemistry, Muğla Sıtkı Koçman University, Muğla, Turkey
| | - Mehmet Öztürk
- Faculty of Sciences, Department of Chemistry, Muğla Sıtkı Koçman University, Muğla, Turkey
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Zaidi KU, Ali SA, Ali A, Naaz I. Natural Tyrosinase Inhibitors: Role of Herbals in the Treatment of Hyperpigmentary Disorders. Mini Rev Med Chem 2019; 19:796-808. [PMID: 31244414 DOI: 10.2174/1389557519666190116101039] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2018] [Revised: 11/02/2018] [Accepted: 01/04/2019] [Indexed: 12/20/2022]
Abstract
Cutaneous pigmentation plays critical role in determining the color of skin along with photo protection of skin from dreadful effects of ultraviolet radiations. Conversely, abnormal accumulation of melanin is responsible for hyper pigmentary disorders such as melasma, senile lentigines and freckles. Because of the visible nature of dermatologic diseases, they have a considerable psychosomatic effect on affected patients. Tyrosinase inhibitors are molecules that interrelate in some way with the enzyme to prevent it from working in the normal manner. Past many decades witnessed the quest for the development of natural tyrosinase inhibitors due to imperative role played by tyrosinase in the process of melanogenesis and fungi or fruit enzymatic browning. Mechanism of pigmentation is characterized by the intact process of the synthesis of specialized black pigment within melanosomes. Melanin is synthesized by a cascade of enzymatic and chemical reactions. For this reason, melanin production is mainly controlled by the expression and activation of tyrosinase. In the current article, we discussed tyrosinase inhibitors from the natural sources, which can be an essential constituent of cosmetics products and depigmenting agents for the treatment of hyperpigmentory disorders.
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Affiliation(s)
- Kamal Uddin Zaidi
- Biotechnology Pharmacology Laboratory CSRD, Peoples University, Bhanpur Bhopal 462037, India
| | - Sharique A Ali
- Post Graduate Department of Biotechnology and Zoology, Saifia College of Science Bhopal 462001, India
| | - Ayesha Ali
- Post Graduate Department of Biotechnology and Zoology, Saifia College of Science Bhopal 462001, India
| | - Ishrat Naaz
- Post Graduate Department of Biotechnology and Zoology, Saifia College of Science Bhopal 462001, India
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Yang A, Qi G, Zheng Z, Wu R, Zhang F, Li C, Han N, Shang Q. Chemical Constituents of Saxifraga umbellulata. Chem Nat Compd 2018. [DOI: 10.1007/s10600-018-2464-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Namjoyan F, Jahangiri A, Azemi ME, Arkian E, Mousavi H. Inhibitory Effects of Physalis alkekengi L., Alcea rosea L., Bunium persicum B. Fedtsch. and Marrubium vulgare L. on Mushroom Tyrosinase. Jundishapur J Nat Pharm Prod 2015; 10:e23356. [PMID: 25866725 PMCID: PMC4386320 DOI: 10.17795/jjnpp-23356] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2014] [Revised: 11/19/2014] [Accepted: 12/03/2014] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND The key enzyme in the process of melanin biosynthesis is tyrosinase. Skin hyperpigmentation and browning of foods are undesirable phenomena which tyrosinase represents. Therefore, tyrosinase inhibitors have been used increasingly for medicinal and cosmetic products. OBJECTIVES In this study, inhibitory effects of four plants including: physalis alkekengi L., Alcea rosea L., Bunium persicum B. Fedtsch. and Marrubium vulgare L. on diphenolase activity of mushroom tyrosinase were evaluated. MATERIALS AND METHODS The inhibitory activities of hydroalcoholic extracts of plants against oxidation of L-Dopa (as a substrate) by mushroom tyrosinase were investigated. RESULTS The hydroalcoholic extract of P. alkekengi showed the most tyrosinase inhibitory effect with IC50 of 0.09 mg/mL vs. 0.38, 0.38 and 2.82 mg/mL of B. persicum, A. rosea and M. vulgare, respectively. M. vulgare exhibited uncompetitive inhibition and other plants showed mixed type inhibition on mushroom tyrosinase. CONCLUSIONS All plants could inhibit mushroom tyrosinase, but more investigations on human tyrosinase and clinical studies are needed.
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Affiliation(s)
- Foroogh Namjoyan
- Department of Pharmacognosy, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, IR Iran
| | - Alireza Jahangiri
- Department of Medicinal Chemistry, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, IR Iran
| | - Mohammad Ebrahim Azemi
- Department of Pharmacognosy, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, IR Iran
| | - Elaheh Arkian
- Medicinal Plant Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, IR Iran
| | - Hamideh Mousavi
- Medicinal Plant Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, IR Iran
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Abstract
Tyrosinase plays a pivotal role in the synthesis of melanin pigment synthesis on skin utilizing tyrosine as a substrate. Melanin is responsible for the protection against harmful ultraviolet irradiation, which can cause significant pathological conditions, such as skin cancers. However, it can also create esthetic problems when accumulated as hyperpigmented spots. Various skin-whitening ingredients which inhibit tyrosinase activity have been identified. Some of them, especially ones with natural product origins, possess phenolic moiety and have been employed in cosmetic products. Semi-synthetic and synthetic inhibitors have also been developed under inspiration of the natural inhibitors yet some of which have no phenolic groups. In this review, tyrosinase inhibitors with natural, semi-synthetic and synthetic origins are listed up with their structures, activities and characteristics. Further, a recent report on the adverse effect of a natural melanin synthesis inhibitor which was included in skin-whitening cosmetics is also briefly discussed.
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Affiliation(s)
- Sang Yeul Lee
- a Department of Pharmacy and Institute of Pharmaceutical Science and Technology , Hanyang University , Ansan , Gyeonggi-do , South Korea
| | - Namhuk Baek
- a Department of Pharmacy and Institute of Pharmaceutical Science and Technology , Hanyang University , Ansan , Gyeonggi-do , South Korea
| | - Tae-gyu Nam
- a Department of Pharmacy and Institute of Pharmaceutical Science and Technology , Hanyang University , Ansan , Gyeonggi-do , South Korea
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Sabudak T, Kaya O, Cukurova E. A new biflavonoid fromSolanum dulcamaraL. and investigation of anti-hyperglycaemic activity of its fruit extract. Nat Prod Res 2014; 29:308-14. [DOI: 10.1080/14786419.2014.928878] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Kolodziejczyk-Czepas J. Trifolium species-derived substances and extracts--biological activity and prospects for medicinal applications. JOURNAL OF ETHNOPHARMACOLOGY 2012; 143:14-23. [PMID: 22771317 DOI: 10.1016/j.jep.2012.06.048] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2012] [Revised: 06/21/2012] [Accepted: 06/21/2012] [Indexed: 06/01/2023]
Abstract
BACKGROUND Despite of the fact that clovers (family: Fabaceae; genus: Trifolium) have been known for many centuries as important forage plants and valuable herbs in folk medicine, their phytochemical characteristics and biological activity remain only partly established. AIM OF THE STUDY The presentation of the current knowledge of physiological effects, therapeutic action, new trends in the investigation of Trifolium plants and suggestions for the future applications of these herbs in therapy of various disorders. METHODS A critical review of literature on the biological activity of Trifolium plants, with the indication on important gaps, was performed. The compilation of existing information on physiological effects and medicinal value of clovers, derived from both traditional medicine recommendations and scientific reports, is presented. RESULTS The available data indicate on the abundance of biologically active substances in Trifolium plants, including numerous flavonoids, saponins, clovamides and phenolic acids. The best known clover - Trifolium pratense L. (red clover) - is used for the production of herbal medicines, an alternative to the conventional hormonal replacement therapy. The biological activity and potential therapeutic effects of other Trifolium species have gained a considerable scientific interest; extracts obtained from various clovers have been shown to possess antioxidative and antiinflammatory activities, inhibiting angiogenesis and displaying anti-cancer properties. CONCLUSIONS Clovers other than T. pratense also seem to be a promising source of valuable phytochemicals, such as isoflavones and various flavonoids. However, the therapeutic use of these Trifolium species is significantly limited by the lack of clinical evidence; thus further studies are needed.
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Affiliation(s)
- Joanna Kolodziejczyk-Czepas
- Department of General Biochemistry, Faculty of Biology and Environmental Protection, University of Lodz, Pomorska 141/3, 90-236 Lodz, Poland.
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Nirmal NP, Benjakul S. Inhibitory effect of mimosine on polyphenoloxidase from cephalothoraxes of Pacific white shrimp (Litopenaeus vannamei). JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2011; 59:10256-10260. [PMID: 21863871 DOI: 10.1021/jf201603k] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The inhibitory effect of mimosine on polyphenoloxidase (PPO) from the cephalothorax of Pacific white shrimp (Litopenaeus vannamei) was studied. Mimosine showed inhibitory activity toward PPO from white shrimp with an apparent molecular weight of 210 kDa as evidenced by the decrease in the activity staining band, as compared to the control. An inhibition kinetic study revealed that mimosine exhibited the mixed type reversible inhibition on PPO from white shrimp with a Ki value of 3.7 mM. Mimosine showed copper (Cu2+) reduction and chelating capacity in a dose dependent manner. Mimosine could react with the intermediate browning product, thereby rendering lower red-brown color formation. Therefore, mimosine could inhibit PPO by different modes of inhibition and could be used to prevent melanosis formation in Pacific white shrimp.
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Affiliation(s)
- Nilesh Prakash Nirmal
- Department of Food Technology, Faculty of Agro-Industry, Prince of Songkla University, Hat Yai, Songkhla, 90112, Thailand
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Casañola-Martin GM, Marrero-Ponce Y, Khan MTH, Khan SB, Torrens F, Pérez-Jiménez F, Rescigno A, Abad C. Bond-based 2D quadratic fingerprints in QSAR studies: virtual and in vitro tyrosinase inhibitory activity elucidation. Chem Biol Drug Des 2010; 76:538-45. [PMID: 20964806 DOI: 10.1111/j.1747-0285.2010.01032.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
In this report, we show the results of quantitative structure-activity relationship (QSAR) studies of tyrosinase inhibitory activity, by using the bond-based quadratic indices as molecular descriptors (MDs) and linear discriminant analysis (LDA), to generate discriminant functions to predict the anti-tyrosinase activity. The best two models [Eqs (6) and (12)] out of the total 12 QSAR models developed here show accuracies of 93.51% and 91.21%, as well as high Matthews correlation coefficients (C) of 0.86 and 0.82, respectively, in the training set. The validation external series depicts values of 90.00% and 89.44% for these best two equations (6) and (12), respectively. Afterwards, a second external prediction data are used to perform a virtual screening of compounds reported in the literature as active (tyrosinase inhibitors). In a final step, a series of lignans is analysed using the in silico-developed models, and in vitro corroboration of the activity is carried out. An issue of great importance to remark here is that all compounds present greater inhibition values than Kojic acid (standard tyrosinase inhibitor: IC₅₀ = 16.67 μm). The current obtained results could be used as a framework to increase the speed, in the biosilico discovery of leads for the treatment of skin disorders.
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Smit N, Vicanova J, Pavel S. The hunt for natural skin whitening agents. Int J Mol Sci 2009; 10:5326-5349. [PMID: 20054473 PMCID: PMC2801997 DOI: 10.3390/ijms10125326] [Citation(s) in RCA: 139] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2009] [Revised: 11/24/2009] [Accepted: 12/09/2009] [Indexed: 11/29/2022] Open
Abstract
Skin whitening products are commercially available for cosmetic purposes in order to obtain a lighter skin appearance. They are also utilized for clinical treatment of pigmentary disorders such as melasma or postinflammatory hyperpigmentation. Whitening agents act at various levels of melanin production in the skin. Many of them are known as competitive inhibitors of tyrosinase, the key enzyme in melanogenesis. Others inhibit the maturation of this enzyme or the transport of pigment granules (melanosomes) from melanocytes to surrounding keratinocytes. In this review we present an overview of (natural) whitening products that may decrease skin pigmentation by their interference with the pigmentary processes.
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Affiliation(s)
- Nico Smit
- Department of Clinical Chemistry, room L02-56, Leiden University Medical Center, P.O. Box 9600, 2300 RC Leiden, The Netherlands
- Author to whom correspondence should be addressed; E-Mail:
; Tel.: +31-71-5264870; Fax: +31-71-5266753
| | | | - Stan Pavel
- Department of Dermatology, Leiden University Medical Center, P.O. Box 9600, 2300 RC Leiden, The Netherlands; E-Mail:
(S.P.)
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Du S, Wang M, Zhu W, Qin Z. A new fungicidal lactone fromXylocarpus granatum(Meliaceae). Nat Prod Res 2009; 23:1316-21. [DOI: 10.1080/14786410902726183] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Chang TS. An updated review of tyrosinase inhibitors. Int J Mol Sci 2009; 10:2440-2475. [PMID: 19582213 PMCID: PMC2705500 DOI: 10.3390/ijms10062440] [Citation(s) in RCA: 879] [Impact Index Per Article: 58.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2009] [Revised: 05/08/2009] [Accepted: 05/21/2009] [Indexed: 11/16/2022] Open
Abstract
Tyrosinase is a multifunctional, glycosylated, and copper-containing oxidase, which catalyzes the first two steps in mammalian melanogenesis and is responsible for enzymatic browning reactions in damaged fruits during post-harvest handling and processing. Neither hyperpigmentation in human skin nor enzymatic browning in fruits are desirable. These phenomena have encouraged researchers to seek new potent tyrosinase inhibitors for use in foods and cosmetics. This article surveys tyrosinase inhibitors newly discovered from natural and synthetic sources. The inhibitory strength is compared with that of a standard inhibitor, kojic acid, and their inhibitory mechanisms are discussed.
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Affiliation(s)
- Te-Sheng Chang
- Department of Biological Science and Technology, National University of Tainan, 33 sec. 2 Shu-Lin St., Tainan, Taiwan; E-Mail:
; Tel. +886 6 2606283; Fax: +886 6 2909502
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Sabudak T, Guler N. Trifolium L.--a review on its phytochemical and pharmacological profile. Phytother Res 2009; 23:439-46. [PMID: 19107737 DOI: 10.1002/ptr.2709] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Plants from the genus Trifolium have been used in traditional medicine by many cultures. In Turkish folk medicine, for example, some Trifolium species are used for their expectorant, analgesic, antiseptic properties and also to treat rheumatic aches. Some species are also grown as pasture crops for animals in the Mediterranean. The high quercetin concentration and soyasaponin occurrence make the seeds of some Trifolium species a potential source of health beneficial phytochemicals for use in human nutrition. However, Trifolium pratense has also gained popularity due to research into its use for the treatment for menopausal symptoms. This paper provides an overview of the phytochemical and pharmacological profile of Trifolium species.
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Affiliation(s)
- Temine Sabudak
- Department of Chemistry, Faculty of Science and Arts, Namik Kemal University, 59860, Tekirdag, Turkey.
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Sabudak T, Isik E, Oksuz S. Two new compounds from Trifolium resupinatum var. microcephalum. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2008; 10:1017-1021. [PMID: 19031240 DOI: 10.1080/10286020802278038] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
An investigation of CH(2)Cl(2) and EtOH extracts of Trifolium resupinatum L. var. microcephalum Zoh. has led to the isolation of two new compounds characterized as 4,15-dimethyl-2-(1,2-dihydroxyethyl)-hexadecene (1) and 1-undecene-1-O-beta-2',3',4',6'-tetraacetyl glucopyranoside (2a). Their structures were established by 1D and 2D NMR techniques, and mass spectroscopy.
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Affiliation(s)
- Temine Sabudak
- Department of Environmental Engineering, Corlu Engineering Faculty, Namik Kemal University, Corlu, Tekirdag, Turkey.
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Abstract
The two new compounds (3-methyl-1-nonene-3-ol and 2',3'-dihydroxy propyl pentadecanoate) and four known compounds were isolated from Trifolium resupinatum L. var. microcephalum Zoh. (Leguminosae). All the compounds were reported for the first time from this plant. The stuructures of the isolates were determined by 1D, 2D NMR techniques and MS spectroscopy.
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Affiliation(s)
- Temine Sabudak
- Faculty of Corlu Engineering, Department of Environment Engineering, Trakya University, Tekirdag, Turkey.
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